Contact us


Kerkewal 49
8401 CH Gorredijk  
The Netherlands

Phone +31513463435

  • Northsea NL

    Northsea (NL)

  • Cornwall (UK)

    Cornwall (UK)

  • Tyra West Platform DK

    Tyra West Platform (DK)

  • Solent (UK)

    Solent (UK)

  • Lake Taihu

    Lake Taihu (China)

  • Zeebruges (BE)

    Zeebruges (BE)

  • Western Schelt (NL)

    Western Schelt (NL)

  • Thames Estuary (UK)

    Thames Estuary (UK)

  • North Sea coast (NL)

    North Sea coast (NL)

  • Foot support

    Foot support

  • IJssellake NL

    IJssellake (NL)

  • Inductive coupling

    Inductive coupling

Hydro Meteo

The Etrometa stepgauge is a contact sensor measuring the waterlevel and waves where they are: at the watersurface. The stepgauge is suited for heavy duty operation, requiring very little and simple maintenance. It requires no recallibration, has no zero drift and has a constant, very small footprint. It has no moving parts and no underwater connectors. Its modular design of 3m sections allows a measuring range of up to 21 m. Sampling rates are standard 2,56 Hz and can be adapted to above 10Hz, depending on the measuring range. Combined with optional wind meters and atmospheric pressure sensors it makes a complete hydro meteo system. All data is collected in one telegram. Optional dedicated software allows for data collection, processing, storage and presentation via internet-browser.

It finds its way to the world’s harbours, seas and oceans. In more recent years its application has extended to inland waters as well, like lakes and rivers. This is primarily due to its suitability to also measure very small waves. It has as such proven to be an essential tool to help refine prediction models for waves.

The best measurement results are obtained when the stepgauge is mounted freely from a slender pole-like structure, where waves can run around easily. In almost all harbour-area’s one can find suitable structures on which the stepgauge can be mounted. Mounting it along a quay side is possible as well as long as it is not too closely positioned to the quay wall, where reflecting waves occur. Its very low energy consumption gives maximum freedom as to where to place it. The instrument can fullfill various goals for various parties at the same time: harbour accessibility (tide and waves), environmental data research, flood warning, coastal defence, global warming effects (GLOSS), pilotage, maritime construction work: for all these purposes, data from one and the same instrument can be used.